TSTP Solution File: NUM482+1 by Otter---3.3

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Otter---3.3
% Problem  : NUM482+1 : TPTP v8.1.0. Released v4.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : otter-tptp-script %s

% Computer : n028.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8042.1875MB
% OS       : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Wed Jul 27 13:08:31 EDT 2022

% Result   : Theorem 3.54s 3.77s
% Output   : Refutation 3.54s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    3
%            Number of leaves      :    6
% Syntax   : Number of clauses     :   10 (   6 unt;   0 nHn;  10 RR)
%            Number of literals    :   20 (   4 equ;  11 neg)
%            Maximal clause size   :    5 (   2 avg)
%            Maximal term depth    :    2 (   1 avg)
%            Number of predicates  :    5 (   3 usr;   1 prp; 0-2 aty)
%            Number of functors    :    3 (   3 usr;   2 con; 0-2 aty)
%            Number of variables   :    7 (   0 sgn)

% Comments : 
%------------------------------------------------------------------------------
cnf(11,axiom,
    ( ~ aNaturalNumber0(A)
    | sdtasdt0(A,sz10) = A ),
    file('NUM482+1.p',unknown),
    [] ).

cnf(50,axiom,
    ( ~ aNaturalNumber0(A)
    | ~ aNaturalNumber0(B)
    | doDivides0(A,B)
    | ~ aNaturalNumber0(C)
    | B != sdtasdt0(A,C) ),
    file('NUM482+1.p',unknown),
    [] ).

cnf(72,axiom,
    ( ~ aNaturalNumber0(A)
    | ~ doDivides0(A,xk)
    | ~ isPrime0(A) ),
    file('NUM482+1.p',unknown),
    [] ).

cnf(128,plain,
    ( ~ aNaturalNumber0(A)
    | doDivides0(A,A)
    | ~ aNaturalNumber0(B)
    | sdtasdt0(A,B) != A ),
    inference(flip,[status(thm),theory(equality)],[inference(factor,[status(thm)],[50])]),
    [iquote('factor,50.1.2,flip.4')] ).

cnf(162,axiom,
    aNaturalNumber0(sz10),
    file('NUM482+1.p',unknown),
    [] ).

cnf(163,axiom,
    aNaturalNumber0(xk),
    file('NUM482+1.p',unknown),
    [] ).

cnf(164,axiom,
    isPrime0(xk),
    file('NUM482+1.p',unknown),
    [] ).

cnf(400,plain,
    sdtasdt0(xk,sz10) = xk,
    inference(hyper,[status(thm)],[163,11]),
    [iquote('hyper,163,11')] ).

cnf(3956,plain,
    doDivides0(xk,xk),
    inference(hyper,[status(thm)],[400,128,163,162]),
    [iquote('hyper,400,128,163,162')] ).

cnf(3960,plain,
    $false,
    inference(hyper,[status(thm)],[3956,72,163,164]),
    [iquote('hyper,3956,72,163,164')] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.06/0.11  % Problem  : NUM482+1 : TPTP v8.1.0. Released v4.0.0.
% 0.06/0.12  % Command  : otter-tptp-script %s
% 0.12/0.33  % Computer : n028.cluster.edu
% 0.12/0.33  % Model    : x86_64 x86_64
% 0.12/0.33  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.33  % Memory   : 8042.1875MB
% 0.12/0.33  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.12/0.33  % CPULimit : 300
% 0.12/0.33  % WCLimit  : 300
% 0.12/0.33  % DateTime : Wed Jul 27 09:59:49 EDT 2022
% 0.12/0.33  % CPUTime  : 
% 2.05/2.26  ----- Otter 3.3f, August 2004 -----
% 2.05/2.26  The process was started by sandbox on n028.cluster.edu,
% 2.05/2.26  Wed Jul 27 09:59:49 2022
% 2.05/2.26  The command was "./otter".  The process ID is 15323.
% 2.05/2.26  
% 2.05/2.26  set(prolog_style_variables).
% 2.05/2.26  set(auto).
% 2.05/2.26     dependent: set(auto1).
% 2.05/2.26     dependent: set(process_input).
% 2.05/2.26     dependent: clear(print_kept).
% 2.05/2.26     dependent: clear(print_new_demod).
% 2.05/2.26     dependent: clear(print_back_demod).
% 2.05/2.26     dependent: clear(print_back_sub).
% 2.05/2.26     dependent: set(control_memory).
% 2.05/2.26     dependent: assign(max_mem, 12000).
% 2.05/2.26     dependent: assign(pick_given_ratio, 4).
% 2.05/2.26     dependent: assign(stats_level, 1).
% 2.05/2.26     dependent: assign(max_seconds, 10800).
% 2.05/2.26  clear(print_given).
% 2.05/2.26  
% 2.05/2.26  formula_list(usable).
% 2.05/2.26  all A (A=A).
% 2.05/2.26  all W0 (aNaturalNumber0(W0)->$T).
% 2.05/2.26  aNaturalNumber0(sz00).
% 2.05/2.26  aNaturalNumber0(sz10).
% 2.05/2.26  sz10!=sz00.
% 2.05/2.26  all W0 W1 (aNaturalNumber0(W0)&aNaturalNumber0(W1)->aNaturalNumber0(sdtpldt0(W0,W1))).
% 2.05/2.26  all W0 W1 (aNaturalNumber0(W0)&aNaturalNumber0(W1)->aNaturalNumber0(sdtasdt0(W0,W1))).
% 2.05/2.26  all W0 W1 (aNaturalNumber0(W0)&aNaturalNumber0(W1)->sdtpldt0(W0,W1)=sdtpldt0(W1,W0)).
% 2.05/2.26  all W0 W1 W2 (aNaturalNumber0(W0)&aNaturalNumber0(W1)&aNaturalNumber0(W2)->sdtpldt0(sdtpldt0(W0,W1),W2)=sdtpldt0(W0,sdtpldt0(W1,W2))).
% 2.05/2.26  all W0 (aNaturalNumber0(W0)->sdtpldt0(W0,sz00)=W0&W0=sdtpldt0(sz00,W0)).
% 2.05/2.26  all W0 W1 (aNaturalNumber0(W0)&aNaturalNumber0(W1)->sdtasdt0(W0,W1)=sdtasdt0(W1,W0)).
% 2.05/2.26  all W0 W1 W2 (aNaturalNumber0(W0)&aNaturalNumber0(W1)&aNaturalNumber0(W2)->sdtasdt0(sdtasdt0(W0,W1),W2)=sdtasdt0(W0,sdtasdt0(W1,W2))).
% 2.05/2.26  all W0 (aNaturalNumber0(W0)->sdtasdt0(W0,sz10)=W0&W0=sdtasdt0(sz10,W0)).
% 2.05/2.26  all W0 (aNaturalNumber0(W0)->sdtasdt0(W0,sz00)=sz00&sz00=sdtasdt0(sz00,W0)).
% 2.05/2.26  all W0 W1 W2 (aNaturalNumber0(W0)&aNaturalNumber0(W1)&aNaturalNumber0(W2)->sdtasdt0(W0,sdtpldt0(W1,W2))=sdtpldt0(sdtasdt0(W0,W1),sdtasdt0(W0,W2))&sdtasdt0(sdtpldt0(W1,W2),W0)=sdtpldt0(sdtasdt0(W1,W0),sdtasdt0(W2,W0))).
% 2.05/2.26  all W0 W1 W2 (aNaturalNumber0(W0)&aNaturalNumber0(W1)&aNaturalNumber0(W2)-> (sdtpldt0(W0,W1)=sdtpldt0(W0,W2)|sdtpldt0(W1,W0)=sdtpldt0(W2,W0)->W1=W2)).
% 2.05/2.26  all W0 (aNaturalNumber0(W0)-> (W0!=sz00-> (all W1 W2 (aNaturalNumber0(W1)&aNaturalNumber0(W2)-> (sdtasdt0(W0,W1)=sdtasdt0(W0,W2)|sdtasdt0(W1,W0)=sdtasdt0(W2,W0)->W1=W2))))).
% 2.05/2.26  all W0 W1 (aNaturalNumber0(W0)&aNaturalNumber0(W1)-> (sdtpldt0(W0,W1)=sz00->W0=sz00&W1=sz00)).
% 2.05/2.26  all W0 W1 (aNaturalNumber0(W0)&aNaturalNumber0(W1)-> (sdtasdt0(W0,W1)=sz00->W0=sz00|W1=sz00)).
% 2.05/2.26  all W0 W1 (aNaturalNumber0(W0)&aNaturalNumber0(W1)-> (sdtlse_qdt0(W0,W1)<-> (exists W2 (aNaturalNumber0(W2)&sdtpldt0(W0,W2)=W1)))).
% 2.05/2.26  all W0 W1 (aNaturalNumber0(W0)&aNaturalNumber0(W1)-> (sdtlse_qdt0(W0,W1)-> (all W2 (W2=sdtmndt0(W1,W0)<->aNaturalNumber0(W2)&sdtpldt0(W0,W2)=W1)))).
% 2.05/2.26  all W0 (aNaturalNumber0(W0)->sdtlse_qdt0(W0,W0)).
% 2.05/2.26  all W0 W1 (aNaturalNumber0(W0)&aNaturalNumber0(W1)-> (sdtlse_qdt0(W0,W1)&sdtlse_qdt0(W1,W0)->W0=W1)).
% 2.05/2.26  all W0 W1 W2 (aNaturalNumber0(W0)&aNaturalNumber0(W1)&aNaturalNumber0(W2)-> (sdtlse_qdt0(W0,W1)&sdtlse_qdt0(W1,W2)->sdtlse_qdt0(W0,W2))).
% 2.05/2.26  all W0 W1 (aNaturalNumber0(W0)&aNaturalNumber0(W1)->sdtlse_qdt0(W0,W1)|W1!=W0&sdtlse_qdt0(W1,W0)).
% 2.05/2.26  all W0 W1 (aNaturalNumber0(W0)&aNaturalNumber0(W1)-> (W0!=W1&sdtlse_qdt0(W0,W1)-> (all W2 (aNaturalNumber0(W2)->sdtpldt0(W2,W0)!=sdtpldt0(W2,W1)&sdtlse_qdt0(sdtpldt0(W2,W0),sdtpldt0(W2,W1))&sdtpldt0(W0,W2)!=sdtpldt0(W1,W2)&sdtlse_qdt0(sdtpldt0(W0,W2),sdtpldt0(W1,W2)))))).
% 2.05/2.26  all W0 W1 W2 (aNaturalNumber0(W0)&aNaturalNumber0(W1)&aNaturalNumber0(W2)-> (W0!=sz00&W1!=W2&sdtlse_qdt0(W1,W2)->sdtasdt0(W0,W1)!=sdtasdt0(W0,W2)&sdtlse_qdt0(sdtasdt0(W0,W1),sdtasdt0(W0,W2))&sdtasdt0(W1,W0)!=sdtasdt0(W2,W0)&sdtlse_qdt0(sdtasdt0(W1,W0),sdtasdt0(W2,W0)))).
% 2.05/2.26  all W0 (aNaturalNumber0(W0)->W0=sz00|W0=sz10|sz10!=W0&sdtlse_qdt0(sz10,W0)).
% 2.05/2.26  all W0 W1 (aNaturalNumber0(W0)&aNaturalNumber0(W1)-> (W0!=sz00->sdtlse_qdt0(W1,sdtasdt0(W1,W0)))).
% 2.05/2.26  all W0 W1 (aNaturalNumber0(W0)&aNaturalNumber0(W1)-> (iLess0(W0,W1)->$T)).
% 2.05/2.26  all W0 W1 (aNaturalNumber0(W0)&aNaturalNumber0(W1)-> (W0!=W1&sdtlse_qdt0(W0,W1)->iLess0(W0,W1))).
% 2.05/2.26  all W0 W1 (aNaturalNumber0(W0)&aNaturalNumber0(W1)-> (doDivides0(W0,W1)<-> (exists W2 (aNaturalNumber0(W2)&W1=sdtasdt0(W0,W2))))).
% 2.05/2.26  all W0 W1 (aNaturalNumber0(W0)&aNaturalNumber0(W1)-> (W0!=sz00&doDivides0(W0,W1)-> (all W2 (W2=sdtsldt0(W1,W0)<->aNaturalNumber0(W2)&W1=sdtasdt0(W0,W2))))).
% 2.05/2.26  all W0 W1 W2 (aNaturalNumber0(W0)&aNaturalNumber0(W1)&aNaturalNumber0(W2)-> (doDivides0(W0,W1)&doDivides0(W1,W2)->doDivides0(W0,W2))).
% 2.05/2.26  all W0 W1 W2 (aNaturalNumber0(W0)&aNaturalNumber0(W1)&aNaturalNumber0(W2)-> (doDivides0(W0,W1)&doDivides0(W0,W2)->doDivides0(W0,sdtpldt0(W1,W2)))).
% 2.05/2.26  all W0 W1 W2 (aNaturalNumber0(W0)&aNaturalNumber0(W1)&aNaturalNumber0(W2)-> (doDivides0(W0,W1)&doDivides0(W0,sdtpldt0(W1,W2))->doDivides0(W0,W2))).
% 2.05/2.26  all W0 W1 (aNaturalNumber0(W0)&aNaturalNumber0(W1)-> (doDivides0(W0,W1)&W1!=sz00->sdtlse_qdt0(W0,W1))).
% 2.05/2.26  all W0 W1 (aNaturalNumber0(W0)&aNaturalNumber0(W1)-> (W0!=sz00&doDivides0(W0,W1)-> (all W2 (aNaturalNumber0(W2)->sdtasdt0(W2,sdtsldt0(W1,W0))=sdtsldt0(sdtasdt0(W2,W1),W0))))).
% 2.05/2.26  all W0 (aNaturalNumber0(W0)-> (isPrime0(W0)<->W0!=sz00&W0!=sz10& (all W1 (aNaturalNumber0(W1)&doDivides0(W1,W0)->W1=sz10|W1=W0)))).
% 2.05/2.26  aNaturalNumber0(xk).
% 2.05/2.26  all W0 (aNaturalNumber0(W0)&W0!=sz00&W0!=sz10-> (iLess0(W0,xk)-> (exists W1 (aNaturalNumber0(W1)&doDivides0(W1,W0)&isPrime0(W1))))).
% 2.05/2.26  xk!=sz00.
% 2.05/2.26  xk!=sz10.
% 2.05/2.26  -(isPrime0(xk)-> (exists W0 (aNaturalNumber0(W0)&doDivides0(W0,xk)&isPrime0(W0)))).
% 2.05/2.26  end_of_list.
% 2.05/2.26  
% 2.05/2.26  -------> usable clausifies to:
% 2.05/2.26  
% 2.05/2.26  list(usable).
% 2.05/2.26  0 [] A=A.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)|$T.
% 2.05/2.26  0 [] aNaturalNumber0(sz00).
% 2.05/2.26  0 [] aNaturalNumber0(sz10).
% 2.05/2.26  0 [] sz10!=sz00.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|aNaturalNumber0(sdtpldt0(W0,W1)).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|aNaturalNumber0(sdtasdt0(W0,W1)).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|sdtpldt0(W0,W1)=sdtpldt0(W1,W0).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -aNaturalNumber0(W2)|sdtpldt0(sdtpldt0(W0,W1),W2)=sdtpldt0(W0,sdtpldt0(W1,W2)).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)|sdtpldt0(W0,sz00)=W0.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)|W0=sdtpldt0(sz00,W0).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|sdtasdt0(W0,W1)=sdtasdt0(W1,W0).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -aNaturalNumber0(W2)|sdtasdt0(sdtasdt0(W0,W1),W2)=sdtasdt0(W0,sdtasdt0(W1,W2)).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)|sdtasdt0(W0,sz10)=W0.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)|W0=sdtasdt0(sz10,W0).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)|sdtasdt0(W0,sz00)=sz00.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)|sz00=sdtasdt0(sz00,W0).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -aNaturalNumber0(W2)|sdtasdt0(W0,sdtpldt0(W1,W2))=sdtpldt0(sdtasdt0(W0,W1),sdtasdt0(W0,W2)).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -aNaturalNumber0(W2)|sdtasdt0(sdtpldt0(W1,W2),W0)=sdtpldt0(sdtasdt0(W1,W0),sdtasdt0(W2,W0)).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -aNaturalNumber0(W2)|sdtpldt0(W0,W1)!=sdtpldt0(W0,W2)|W1=W2.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -aNaturalNumber0(W2)|sdtpldt0(W1,W0)!=sdtpldt0(W2,W0)|W1=W2.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)|W0=sz00| -aNaturalNumber0(W1)| -aNaturalNumber0(W2)|sdtasdt0(W0,W1)!=sdtasdt0(W0,W2)|W1=W2.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)|W0=sz00| -aNaturalNumber0(W1)| -aNaturalNumber0(W2)|sdtasdt0(W1,W0)!=sdtasdt0(W2,W0)|W1=W2.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|sdtpldt0(W0,W1)!=sz00|W0=sz00.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|sdtpldt0(W0,W1)!=sz00|W1=sz00.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|sdtasdt0(W0,W1)!=sz00|W0=sz00|W1=sz00.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -sdtlse_qdt0(W0,W1)|aNaturalNumber0($f1(W0,W1)).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -sdtlse_qdt0(W0,W1)|sdtpldt0(W0,$f1(W0,W1))=W1.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|sdtlse_qdt0(W0,W1)| -aNaturalNumber0(W2)|sdtpldt0(W0,W2)!=W1.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -sdtlse_qdt0(W0,W1)|W2!=sdtmndt0(W1,W0)|aNaturalNumber0(W2).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -sdtlse_qdt0(W0,W1)|W2!=sdtmndt0(W1,W0)|sdtpldt0(W0,W2)=W1.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -sdtlse_qdt0(W0,W1)|W2=sdtmndt0(W1,W0)| -aNaturalNumber0(W2)|sdtpldt0(W0,W2)!=W1.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)|sdtlse_qdt0(W0,W0).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -sdtlse_qdt0(W0,W1)| -sdtlse_qdt0(W1,W0)|W0=W1.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -aNaturalNumber0(W2)| -sdtlse_qdt0(W0,W1)| -sdtlse_qdt0(W1,W2)|sdtlse_qdt0(W0,W2).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|sdtlse_qdt0(W0,W1)|W1!=W0.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|sdtlse_qdt0(W0,W1)|sdtlse_qdt0(W1,W0).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|W0=W1| -sdtlse_qdt0(W0,W1)| -aNaturalNumber0(W2)|sdtpldt0(W2,W0)!=sdtpldt0(W2,W1).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|W0=W1| -sdtlse_qdt0(W0,W1)| -aNaturalNumber0(W2)|sdtlse_qdt0(sdtpldt0(W2,W0),sdtpldt0(W2,W1)).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|W0=W1| -sdtlse_qdt0(W0,W1)| -aNaturalNumber0(W2)|sdtpldt0(W0,W2)!=sdtpldt0(W1,W2).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|W0=W1| -sdtlse_qdt0(W0,W1)| -aNaturalNumber0(W2)|sdtlse_qdt0(sdtpldt0(W0,W2),sdtpldt0(W1,W2)).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -aNaturalNumber0(W2)|W0=sz00|W1=W2| -sdtlse_qdt0(W1,W2)|sdtasdt0(W0,W1)!=sdtasdt0(W0,W2).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -aNaturalNumber0(W2)|W0=sz00|W1=W2| -sdtlse_qdt0(W1,W2)|sdtlse_qdt0(sdtasdt0(W0,W1),sdtasdt0(W0,W2)).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -aNaturalNumber0(W2)|W0=sz00|W1=W2| -sdtlse_qdt0(W1,W2)|sdtasdt0(W1,W0)!=sdtasdt0(W2,W0).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -aNaturalNumber0(W2)|W0=sz00|W1=W2| -sdtlse_qdt0(W1,W2)|sdtlse_qdt0(sdtasdt0(W1,W0),sdtasdt0(W2,W0)).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)|W0=sz00|W0=sz10|sz10!=W0.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)|W0=sz00|W0=sz10|sdtlse_qdt0(sz10,W0).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|W0=sz00|sdtlse_qdt0(W1,sdtasdt0(W1,W0)).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -iLess0(W0,W1)|$T.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|W0=W1| -sdtlse_qdt0(W0,W1)|iLess0(W0,W1).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -doDivides0(W0,W1)|aNaturalNumber0($f2(W0,W1)).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -doDivides0(W0,W1)|W1=sdtasdt0(W0,$f2(W0,W1)).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|doDivides0(W0,W1)| -aNaturalNumber0(W2)|W1!=sdtasdt0(W0,W2).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|W0=sz00| -doDivides0(W0,W1)|W2!=sdtsldt0(W1,W0)|aNaturalNumber0(W2).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|W0=sz00| -doDivides0(W0,W1)|W2!=sdtsldt0(W1,W0)|W1=sdtasdt0(W0,W2).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|W0=sz00| -doDivides0(W0,W1)|W2=sdtsldt0(W1,W0)| -aNaturalNumber0(W2)|W1!=sdtasdt0(W0,W2).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -aNaturalNumber0(W2)| -doDivides0(W0,W1)| -doDivides0(W1,W2)|doDivides0(W0,W2).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -aNaturalNumber0(W2)| -doDivides0(W0,W1)| -doDivides0(W0,W2)|doDivides0(W0,sdtpldt0(W1,W2)).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -aNaturalNumber0(W2)| -doDivides0(W0,W1)| -doDivides0(W0,sdtpldt0(W1,W2))|doDivides0(W0,W2).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)| -doDivides0(W0,W1)|W1=sz00|sdtlse_qdt0(W0,W1).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -aNaturalNumber0(W1)|W0=sz00| -doDivides0(W0,W1)| -aNaturalNumber0(W2)|sdtasdt0(W2,sdtsldt0(W1,W0))=sdtsldt0(sdtasdt0(W2,W1),W0).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -isPrime0(W0)|W0!=sz00.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -isPrime0(W0)|W0!=sz10.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -isPrime0(W0)| -aNaturalNumber0(W1)| -doDivides0(W1,W0)|W1=sz10|W1=W0.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)|isPrime0(W0)|W0=sz00|W0=sz10|aNaturalNumber0($f3(W0)).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)|isPrime0(W0)|W0=sz00|W0=sz10|doDivides0($f3(W0),W0).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)|isPrime0(W0)|W0=sz00|W0=sz10|$f3(W0)!=sz10.
% 2.05/2.26  0 [] -aNaturalNumber0(W0)|isPrime0(W0)|W0=sz00|W0=sz10|$f3(W0)!=W0.
% 2.05/2.26  0 [] aNaturalNumber0(xk).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)|W0=sz00|W0=sz10| -iLess0(W0,xk)|aNaturalNumber0($f4(W0)).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)|W0=sz00|W0=sz10| -iLess0(W0,xk)|doDivides0($f4(W0),W0).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)|W0=sz00|W0=sz10| -iLess0(W0,xk)|isPrime0($f4(W0)).
% 2.05/2.26  0 [] xk!=sz00.
% 2.05/2.26  0 [] xk!=sz10.
% 2.05/2.26  0 [] isPrime0(xk).
% 2.05/2.26  0 [] -aNaturalNumber0(W0)| -doDivides0(W0,xk)| -isPrime0(W0).
% 2.05/2.26  end_of_list.
% 2.05/2.26  
% 2.05/2.26  SCAN INPUT: prop=0, horn=0, equality=1, symmetry=0, max_lits=7.
% 2.05/2.26  
% 2.05/2.26  This ia a non-Horn set with equality.  The strategy will be
% 2.05/2.26  Knuth-Bendix, ordered hyper_res, factoring, and unit
% 2.05/2.27  deletion, with positive clauses in sos and nonpositive
% 2.05/2.27  clauses in usable.
% 2.05/2.27  
% 2.05/2.27     dependent: set(knuth_bendix).
% 2.05/2.27     dependent: set(anl_eq).
% 2.05/2.27     dependent: set(para_from).
% 2.05/2.27     dependent: set(para_into).
% 2.05/2.27     dependent: clear(para_from_right).
% 2.05/2.27     dependent: clear(para_into_right).
% 2.05/2.27     dependent: set(para_from_vars).
% 2.05/2.27     dependent: set(eq_units_both_ways).
% 2.05/2.27     dependent: set(dynamic_demod_all).
% 2.05/2.27     dependent: set(dynamic_demod).
% 2.05/2.27     dependent: set(order_eq).
% 2.05/2.27     dependent: set(back_demod).
% 2.05/2.27     dependent: set(lrpo).
% 2.05/2.27     dependent: set(hyper_res).
% 2.05/2.27     dependent: set(unit_deletion).
% 2.05/2.27     dependent: set(factor).
% 2.05/2.27  
% 2.05/2.27  ------------> process usable:
% 2.05/2.27  ** KEPT (pick-wt=3): 1 [] sz10!=sz00.
% 2.05/2.27  ** KEPT (pick-wt=8): 2 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|aNaturalNumber0(sdtpldt0(A,B)).
% 2.05/2.27  ** KEPT (pick-wt=8): 3 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|aNaturalNumber0(sdtasdt0(A,B)).
% 2.05/2.27  ** KEPT (pick-wt=11): 4 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|sdtpldt0(A,B)=sdtpldt0(B,A).
% 2.05/2.27  ** KEPT (pick-wt=17): 5 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -aNaturalNumber0(C)|sdtpldt0(sdtpldt0(A,B),C)=sdtpldt0(A,sdtpldt0(B,C)).
% 2.05/2.27  ** KEPT (pick-wt=7): 6 [] -aNaturalNumber0(A)|sdtpldt0(A,sz00)=A.
% 2.05/2.27  ** KEPT (pick-wt=7): 8 [copy,7,flip.2] -aNaturalNumber0(A)|sdtpldt0(sz00,A)=A.
% 2.05/2.27  ** KEPT (pick-wt=11): 9 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|sdtasdt0(A,B)=sdtasdt0(B,A).
% 2.05/2.27  ** KEPT (pick-wt=17): 10 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -aNaturalNumber0(C)|sdtasdt0(sdtasdt0(A,B),C)=sdtasdt0(A,sdtasdt0(B,C)).
% 2.05/2.27  ** KEPT (pick-wt=7): 11 [] -aNaturalNumber0(A)|sdtasdt0(A,sz10)=A.
% 2.05/2.27  ** KEPT (pick-wt=7): 13 [copy,12,flip.2] -aNaturalNumber0(A)|sdtasdt0(sz10,A)=A.
% 2.05/2.27  ** KEPT (pick-wt=7): 14 [] -aNaturalNumber0(A)|sdtasdt0(A,sz00)=sz00.
% 2.05/2.27  ** KEPT (pick-wt=7): 16 [copy,15,flip.2] -aNaturalNumber0(A)|sdtasdt0(sz00,A)=sz00.
% 2.05/2.27  ** KEPT (pick-wt=19): 18 [copy,17,flip.4] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -aNaturalNumber0(C)|sdtpldt0(sdtasdt0(A,B),sdtasdt0(A,C))=sdtasdt0(A,sdtpldt0(B,C)).
% 2.05/2.27  ** KEPT (pick-wt=19): 20 [copy,19,flip.4] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -aNaturalNumber0(C)|sdtpldt0(sdtasdt0(B,A),sdtasdt0(C,A))=sdtasdt0(sdtpldt0(B,C),A).
% 2.05/2.27  ** KEPT (pick-wt=16): 21 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -aNaturalNumber0(C)|sdtpldt0(A,B)!=sdtpldt0(A,C)|B=C.
% 2.05/2.27  ** KEPT (pick-wt=16): 22 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -aNaturalNumber0(C)|sdtpldt0(B,A)!=sdtpldt0(C,A)|B=C.
% 2.05/2.27  ** KEPT (pick-wt=19): 23 [] -aNaturalNumber0(A)|A=sz00| -aNaturalNumber0(B)| -aNaturalNumber0(C)|sdtasdt0(A,B)!=sdtasdt0(A,C)|B=C.
% 2.05/2.27  ** KEPT (pick-wt=19): 24 [] -aNaturalNumber0(A)|A=sz00| -aNaturalNumber0(B)| -aNaturalNumber0(C)|sdtasdt0(B,A)!=sdtasdt0(C,A)|B=C.
% 2.05/2.27  ** KEPT (pick-wt=12): 25 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|sdtpldt0(A,B)!=sz00|A=sz00.
% 2.05/2.27  ** KEPT (pick-wt=12): 26 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|sdtpldt0(A,B)!=sz00|B=sz00.
% 2.05/2.27  ** KEPT (pick-wt=15): 27 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|sdtasdt0(A,B)!=sz00|A=sz00|B=sz00.
% 2.05/2.27  ** KEPT (pick-wt=11): 28 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -sdtlse_qdt0(A,B)|aNaturalNumber0($f1(A,B)).
% 2.05/2.27  ** KEPT (pick-wt=14): 29 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -sdtlse_qdt0(A,B)|sdtpldt0(A,$f1(A,B))=B.
% 2.05/2.27  ** KEPT (pick-wt=14): 30 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|sdtlse_qdt0(A,B)| -aNaturalNumber0(C)|sdtpldt0(A,C)!=B.
% 2.05/2.27  ** KEPT (pick-wt=14): 31 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -sdtlse_qdt0(A,B)|C!=sdtmndt0(B,A)|aNaturalNumber0(C).
% 2.05/2.27  ** KEPT (pick-wt=17): 32 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -sdtlse_qdt0(A,B)|C!=sdtmndt0(B,A)|sdtpldt0(A,C)=B.
% 2.05/2.27  ** KEPT (pick-wt=19): 33 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -sdtlse_qdt0(A,B)|C=sdtmndt0(B,A)| -aNaturalNumber0(C)|sdtpldt0(A,C)!=B.
% 2.05/2.27  ** KEPT (pick-wt=5): 34 [] -aNaturalNumber0(A)|sdtlse_qdt0(A,A).
% 2.05/2.27  ** KEPT (pick-wt=13): 35 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -sdtlse_qdt0(A,B)| -sdtlse_qdt0(B,A)|A=B.
% 2.05/2.27  ** KEPT (pick-wt=15): 36 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -aNaturalNumber0(C)| -sdtlse_qdt0(A,B)| -sdtlse_qdt0(B,C)|sdtlse_qdt0(A,C).
% 2.05/2.27  ** KEPT (pick-wt=10): 37 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|sdtlse_qdt0(A,B)|B!=A.
% 2.05/2.29  ** KEPT (pick-wt=10): 38 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|sdtlse_qdt0(A,B)|sdtlse_qdt0(B,A).
% 2.05/2.29    Following clause subsumed by 21 during input processing: 0 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|A=B| -sdtlse_qdt0(A,B)| -aNaturalNumber0(C)|sdtpldt0(C,A)!=sdtpldt0(C,B).
% 2.05/2.29  ** KEPT (pick-wt=19): 39 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|A=B| -sdtlse_qdt0(A,B)| -aNaturalNumber0(C)|sdtlse_qdt0(sdtpldt0(C,A),sdtpldt0(C,B)).
% 2.05/2.29    Following clause subsumed by 22 during input processing: 0 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|A=B| -sdtlse_qdt0(A,B)| -aNaturalNumber0(C)|sdtpldt0(A,C)!=sdtpldt0(B,C).
% 2.05/2.29  ** KEPT (pick-wt=19): 40 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|A=B| -sdtlse_qdt0(A,B)| -aNaturalNumber0(C)|sdtlse_qdt0(sdtpldt0(A,C),sdtpldt0(B,C)).
% 2.05/2.29    Following clause subsumed by 23 during input processing: 0 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -aNaturalNumber0(C)|A=sz00|B=C| -sdtlse_qdt0(B,C)|sdtasdt0(A,B)!=sdtasdt0(A,C).
% 2.05/2.29  ** KEPT (pick-wt=22): 41 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -aNaturalNumber0(C)|A=sz00|B=C| -sdtlse_qdt0(B,C)|sdtlse_qdt0(sdtasdt0(A,B),sdtasdt0(A,C)).
% 2.05/2.29    Following clause subsumed by 24 during input processing: 0 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -aNaturalNumber0(C)|A=sz00|B=C| -sdtlse_qdt0(B,C)|sdtasdt0(B,A)!=sdtasdt0(C,A).
% 2.05/2.29  ** KEPT (pick-wt=22): 42 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -aNaturalNumber0(C)|A=sz00|B=C| -sdtlse_qdt0(B,C)|sdtlse_qdt0(sdtasdt0(B,A),sdtasdt0(C,A)).
% 2.05/2.29  ** KEPT (pick-wt=11): 43 [] -aNaturalNumber0(A)|A=sz00|A=sz10|sz10!=A.
% 2.05/2.29  ** KEPT (pick-wt=11): 44 [] -aNaturalNumber0(A)|A=sz00|A=sz10|sdtlse_qdt0(sz10,A).
% 2.05/2.29  ** KEPT (pick-wt=12): 45 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|A=sz00|sdtlse_qdt0(B,sdtasdt0(B,A)).
% 2.05/2.29  ** KEPT (pick-wt=13): 46 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|A=B| -sdtlse_qdt0(A,B)|iLess0(A,B).
% 2.05/2.29  ** KEPT (pick-wt=11): 47 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -doDivides0(A,B)|aNaturalNumber0($f2(A,B)).
% 2.05/2.29  ** KEPT (pick-wt=14): 49 [copy,48,flip.4] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -doDivides0(A,B)|sdtasdt0(A,$f2(A,B))=B.
% 2.05/2.29  ** KEPT (pick-wt=14): 50 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|doDivides0(A,B)| -aNaturalNumber0(C)|B!=sdtasdt0(A,C).
% 2.05/2.29  ** KEPT (pick-wt=17): 51 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|A=sz00| -doDivides0(A,B)|C!=sdtsldt0(B,A)|aNaturalNumber0(C).
% 2.05/2.29  ** KEPT (pick-wt=20): 52 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|A=sz00| -doDivides0(A,B)|C!=sdtsldt0(B,A)|B=sdtasdt0(A,C).
% 2.05/2.29  ** KEPT (pick-wt=22): 53 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)|A=sz00| -doDivides0(A,B)|C=sdtsldt0(B,A)| -aNaturalNumber0(C)|B!=sdtasdt0(A,C).
% 2.05/2.29  ** KEPT (pick-wt=15): 54 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -aNaturalNumber0(C)| -doDivides0(A,B)| -doDivides0(B,C)|doDivides0(A,C).
% 2.05/2.29  ** KEPT (pick-wt=17): 55 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -aNaturalNumber0(C)| -doDivides0(A,B)| -doDivides0(A,C)|doDivides0(A,sdtpldt0(B,C)).
% 2.05/2.29  ** KEPT (pick-wt=17): 56 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -aNaturalNumber0(C)| -doDivides0(A,B)| -doDivides0(A,sdtpldt0(B,C))|doDivides0(A,C).
% 2.05/2.29  ** KEPT (pick-wt=13): 57 [] -aNaturalNumber0(A)| -aNaturalNumber0(B)| -doDivides0(A,B)|B=sz00|sdtlse_qdt0(A,B).
% 2.05/2.29  ** KEPT (pick-wt=23): 59 [copy,58,flip.6] -aNaturalNumber0(A)| -aNaturalNumber0(B)|A=sz00| -doDivides0(A,B)| -aNaturalNumber0(C)|sdtsldt0(sdtasdt0(C,B),A)=sdtasdt0(C,sdtsldt0(B,A)).
% 2.05/2.29  ** KEPT (pick-wt=7): 60 [] -aNaturalNumber0(A)| -isPrime0(A)|A!=sz00.
% 2.05/2.29  ** KEPT (pick-wt=7): 61 [] -aNaturalNumber0(A)| -isPrime0(A)|A!=sz10.
% 2.05/2.29  ** KEPT (pick-wt=15): 62 [] -aNaturalNumber0(A)| -isPrime0(A)| -aNaturalNumber0(B)| -doDivides0(B,A)|B=sz10|B=A.
% 2.05/2.29  ** KEPT (pick-wt=13): 63 [] -aNaturalNumber0(A)|isPrime0(A)|A=sz00|A=sz10|aNaturalNumber0($f3(A)).
% 2.05/2.29  ** KEPT (pick-wt=14): 64 [] -aNaturalNumber0(A)|isPrime0(A)|A=sz00|A=sz10|doDivides0($f3(A),A).
% 2.05/2.29  ** KEPT (pick-wt=14): 65 [] -aNaturalNumber0(A)|isPrime0(A)|A=sz00|A=sz10|$f3(A)!=sz10.
% 2.05/2.29  ** KEPT (pick-wt=14): 66 [] -aNaturalNumber0(A)|isPrime0(A)|A=sz00|A=sz10|$f3(A)!=A.
% 2.05/2.29  ** KEPT (pick-wt=14): 67 [] -aNaturalNumber0(A)|A=sz00|A=sz10| -iLess0(A,xk)|aNaturalNumber0($f4(A)).
% 2.05/2.29  ** KEPT (pick-wt=15): 68 [] -aNaturalNumber0(A)|A=sz00|A=sz10| -iLess0(A,xk)|doDivides0($f4(A),A).
% 3.54/3.77  ** KEPT (pick-wt=14): 69 [] -aNaturalNumber0(A)|A=sz00|A=sz10| -iLess0(A,xk)|isPrime0($f4(A)).
% 3.54/3.77  ** KEPT (pick-wt=3): 70 [] xk!=sz00.
% 3.54/3.77  ** KEPT (pick-wt=3): 71 [] xk!=sz10.
% 3.54/3.77  ** KEPT (pick-wt=7): 72 [] -aNaturalNumber0(A)| -doDivides0(A,xk)| -isPrime0(A).
% 3.54/3.77  
% 3.54/3.77  ------------> process sos:
% 3.54/3.77  ** KEPT (pick-wt=3): 160 [] A=A.
% 3.54/3.77  ** KEPT (pick-wt=2): 161 [] aNaturalNumber0(sz00).
% 3.54/3.77  ** KEPT (pick-wt=2): 162 [] aNaturalNumber0(sz10).
% 3.54/3.77  ** KEPT (pick-wt=2): 163 [] aNaturalNumber0(xk).
% 3.54/3.77  ** KEPT (pick-wt=2): 164 [] isPrime0(xk).
% 3.54/3.77    Following clause subsumed by 160 during input processing: 0 [copy,160,flip.1] A=A.
% 3.54/3.77  160 back subsumes 159.
% 3.54/3.77  160 back subsumes 153.
% 3.54/3.77  160 back subsumes 152.
% 3.54/3.77  160 back subsumes 151.
% 3.54/3.77  160 back subsumes 145.
% 3.54/3.77  160 back subsumes 114.
% 3.54/3.77  160 back subsumes 102.
% 3.54/3.77  160 back subsumes 98.
% 3.54/3.77  160 back subsumes 94.
% 3.54/3.77  160 back subsumes 91.
% 3.54/3.77  160 back subsumes 79.
% 3.54/3.77  160 back subsumes 75.
% 3.54/3.77  
% 3.54/3.77  ======= end of input processing =======
% 3.54/3.77  
% 3.54/3.77  =========== start of search ===========
% 3.54/3.77  
% 3.54/3.77  
% 3.54/3.77  Resetting weight limit to 8.
% 3.54/3.77  
% 3.54/3.77  
% 3.54/3.77  Resetting weight limit to 8.
% 3.54/3.77  
% 3.54/3.77  sos_size=1517
% 3.54/3.77  
% 3.54/3.77  
% 3.54/3.77  Resetting weight limit to 6.
% 3.54/3.77  
% 3.54/3.77  
% 3.54/3.77  Resetting weight limit to 6.
% 3.54/3.77  
% 3.54/3.77  sos_size=1659
% 3.54/3.77  
% 3.54/3.77  -------- PROOF -------- 
% 3.54/3.77  
% 3.54/3.77  -----> EMPTY CLAUSE at   1.51 sec ----> 3960 [hyper,3956,72,163,164] $F.
% 3.54/3.77  
% 3.54/3.77  Length of proof is 3.  Level of proof is 2.
% 3.54/3.77  
% 3.54/3.77  ---------------- PROOF ----------------
% 3.54/3.77  % SZS status Theorem
% 3.54/3.77  % SZS output start Refutation
% See solution above
% 3.54/3.77  ------------ end of proof -------------
% 3.54/3.77  
% 3.54/3.77  
% 3.54/3.77  Search stopped by max_proofs option.
% 3.54/3.77  
% 3.54/3.77  
% 3.54/3.77  Search stopped by max_proofs option.
% 3.54/3.77  
% 3.54/3.77  ============ end of search ============
% 3.54/3.77  
% 3.54/3.77  -------------- statistics -------------
% 3.54/3.77  clauses given                 57
% 3.54/3.77  clauses generated          51873
% 3.54/3.77  clauses kept                2810
% 3.54/3.77  clauses forward subsumed    8989
% 3.54/3.77  clauses back subsumed        182
% 3.54/3.77  Kbytes malloced             4882
% 3.54/3.77  
% 3.54/3.77  ----------- times (seconds) -----------
% 3.54/3.77  user CPU time          1.51          (0 hr, 0 min, 1 sec)
% 3.54/3.77  system CPU time        0.00          (0 hr, 0 min, 0 sec)
% 3.54/3.77  wall-clock time        3             (0 hr, 0 min, 3 sec)
% 3.54/3.77  
% 3.54/3.77  That finishes the proof of the theorem.
% 3.54/3.77  
% 3.54/3.77  Process 15323 finished Wed Jul 27 09:59:52 2022
% 3.54/3.77  Otter interrupted
% 3.54/3.77  PROOF FOUND
%------------------------------------------------------------------------------